8000 bpo-1635741: _sqlite3 uses PyModule_AddObjectRef by erlend-aasland · Pull Request #23148 · python/cpython · GitHub
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bpo-1635741: _sqlite3 uses PyModule_AddObjectRef #23148

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Merged
merged 6 commits into from
Nov 4, 2020
Merged

bpo-1635741: _sqlite3 uses PyModule_AddObjectRef #23148

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c062592
Use PyModule_AddObjectRef iso. PyModule_AddObject in _sqlite3
Nov 4, 2020
590d11d
Address review comment: Use intermingled variable declarations
Nov 4, 2020
23ba6fa
Update Modules/_sqlite/module.c
Nov 4, 2020
cdae05e
Address review comment: Remove useless incref/decref
Nov 4, 2020
911ee5a
Address review comment: Use intermingled variable declarations
Nov 4, 2020
a4bb4bf
Address review comment: Use intermingled variable declarations again
Nov 4, 2020
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Use PyModule_AddObjectRef iso. PyModule_AddObject in _sqlite3
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Erlend E. Aasland committed Nov 4, 2020
commit c0625927fe3a90459259054274c21960ead7ffeb
10 changes: 5 additions & 5 deletions Modules/_sqlite/microprotocols.c
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Original file line number Diff line number Diff line change
Expand Up @@ -38,17 +38,17 @@ static PyObject *psyco_adapters = NULL;
int
pysqlite_microprotocols_init(PyObject *module)
{
int res;

/* create adapters dictionary and put it in module namespace */
if ((psyco_adapters = PyDict_New()) == NULL) {
return -1;
}

if (PyModule_AddObject(module, "adapters", psyco_adapters) < 0) {
Py_DECREF(psyco_adapters);
return -1;
}
res = PyModule_AddObjectRef(module, "adapters", psyco_adapters);
Py_DECREF(psyco_adapters);

return 0;
return res;
}


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30 changes: 19 additions & 11 deletions Modules/_sqlite/module.c
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Expand Up @@ -263,17 +263,19 @@ pysqlite_adapt_impl(PyObject *module, PyObject *obj, PyObject *proto,
return pysqlite_microprotocols_adapt(obj, proto, alt);
}

static void converters_init(PyObject* module)
static int converters_init(PyObject* module)
{
int res;

_pysqlite_converters = PyDict_New();
if (!_pysqlite_converters) {
return;
return -1;
}

if (PyModule_AddObject(module, "converters", _pysqlite_converters) < 0) {
Py_DECREF(_pysqlite_converters);
}
return;
res = PyModule_AddObjectRef(module, "converters", _pysqlite_converters);
Py_DECREF(_pysqlite_converters);

return res;
}

static PyMethodDef module_methods[] = {
Expand Down Expand Up @@ -357,19 +359,22 @@ do { \

#define ADD_EXCEPTION(module, name, exc, base) \
do { \
int res; \
exc = PyErr_NewException(MODULE_NAME "." name, base, NULL); \
if (!exc) { \
goto error; \
} \
if (PyModule_AddObject(module, name, exc) < 0) { \
Py_DECREF(exc); \
res = PyModule_AddObjectRef(module, name, exc); \
Py_DECREF(exc); \
if (res == -1) { \
goto error; \
} \
} while (0)

PyMODINIT_FUNC PyInit__sqlite3(void)
{
PyObject *module;
int res;

if (sqlite3_libversion_number() < 3007003) {
PyErr_SetString(PyExc_ImportError, MODULE_NAME ": SQLite 3.7.3 or higher required");
Expand Down Expand Up @@ -417,8 +422,9 @@ PyMODINIT_FUNC PyInit__sqlite3(void)
Now OptimizedUnicode is an alias for str, so it has no
effect. */
Py_INCREF((PyObject*)&PyUnicode_Type);
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This call looks like a ref leak.

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Please remove the (now) useless INCREF/DECREF dance.

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@erlend-aasland erlend-aasland Nov 4, 2020 •
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Got it; thanks!

if (PyModule_AddObject(module, "OptimizedUnicode", (PyObject*)&PyUnicode_Type) < 0) {
Py_DECREF((PyObject*)&PyUnicode_Type);
res = PyModule_AddObjectRef(module, "OptimizedUnicode", (PyObject*)&PyUnicode_Type);
Py_DECREF((PyObject*)&PyUnicode_Type);
if (res == -1) {
goto error;
}

Expand All @@ -441,7 +447,9 @@ PyMODINIT_FUNC PyInit__sqlite3(void)
}

/* initialize the default converters */
converters_init(module);
if (converters_init(module) < 0) {
goto error;
}

error:
if (PyErr_Occurred())
Expand Down
0